Question 1: The Stem and Leaf output that corresponds to a data set of test scores (marked out of 1000) is as follows:
Stem-and-leaf of TestScores N = (purposely deleted)
Leaf Unit = 10.0
6 2 133788
17 3 11456678899
(16) 4 0112444445566778
16 5 00055599
8 6 33458
3 7 27
1 8 1
A student in his term project last year concluded as follows:
i. 49 data points form this dataset.
ii. The data points in this data set range from 21 to 81 inclusive.
iii. The actual class interval containing the score '77' is 70 - 79.
iv. The median class is 40 - 48
v. The modal test score was 44
vi. The histogram of this dataset is symmetric.
Do you agree with the student? Where did this student go wrong? Justify your answer.